The Illinois River Bluffs Assessment Area falls within portions of 11 counties -Bureau, Fulton, Knox, LaSalle, Lee, Marshall, Peoria, Putnam, Stark, Tazewell, and Woodford. It encompasses 2,637 square miles and takes in two physiographic divisions, the Bloomington Ridged Till Plain and the Galesburg Plain. The Illinois River is the dominant feature of the area; the width of the river valley ranges from one mile at its narrowest points in the northern portion to more than seven miles for much of the central and southern portions of the area. In cutting through the upland areas, the valley has created a significant amount of relief, with bluffs rising steeply to 150 feet above the valley floor.
This assessment is comprised of four volumes. In Volume 1, Geology discusses the geology, soils, and minerals in the assessment area. Volume 2, Water Resources, discusses the surface and groundwater resources and Volume 3, Living Resources, describes the natural vegetation communities and the fauna of the region. Volume 4 contains three parts: Part I, Socio-Economic Profile, discusses the demographics, infrastructure, and economy of the area; Part II, Environmental Quality, discusses air and water quality, and hazardous and toxic waste generation and management in the area; and Part III, Archaeological Resources, identifies and assesses the archaeological sites known in the area.

These documents are a product of the Illinois state scientific surveys
and the Illinois Department of Natural Resources, and has been selected
and made available by the Institute of Natural Resource Sustainability,
University of Illinois at Urbana-Champaign. They are intended solely for
noncommercial research and educational use, and proper attribution is
requested.

Date Available in IDEALS:

2009-11-04

Identifier in Online Catalog:

4334798

OCLC Identifier:

(OCoLC)ocm46610669

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This item appears in the following Collection(s)

Critical Trends Assessment Program Regional Watershed AssessmentsDetailed assessments of 32 major watersheds in Illinois, conducted through the Critical Trends Assessment Program administered by the Illinois Department of Natural Resources. Includes contributions from each of the State Scientific Surveys which are now part of the Prairie Research Institute.